Cosmological Relaxation of the Electroweak Scale

TL;DR

This paper introduces a novel cosmological approach to solving the electroweak hierarchy problem without relying on weak scale dynamics or anthropic reasoning, using early universe evolution to naturally set the Higgs mass.

Contribution

It proposes a new class of solutions involving cosmological dynamics that achieve a small Higgs mass with a high cutoff, extending the naturalness paradigm.

Findings

Achieves a cutoff scale of 10^8 GeV in a natural model

Demonstrates dynamical evolution can set the Higgs mass

Introduces a model with standard particles, axion, and inflation sector

Abstract

A new class of solutions to the electroweak hierarchy problem is presented that does not require either weak scale dynamics or anthropics. Dynamical evolution during the early universe drives the Higgs mass to a value much smaller than the cutoff. The simplest model has the particle content of the standard model plus a QCD axion and an inflation sector. The highest cutoff achieved in any technically natural model is 10^8 GeV.